Home / 78,417.12-108,209.22-46,146.60

Finding the Fourth Proportional to 78,417.12, 108,209.22 and 46,146.60

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Solution

The fourth proportional to 78,417.12, 108,209.22 and 46,146.60 is: 63,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417.12 : 108,209.22 = 46,146.60 : x
  2. Step 2: Convert to fraction form
    78,417.12/108,209.22 = 46,146.60/x
  3. Step 3: Cross multiply
    78,417.12x = 108,209.22 × 46,146.60
  4. Step 4: Simplify right side
    78,417.12x = 4,993,487,591.65
  5. Step 5: Solve for x
    x = 4,993,487,591.65/78,417.12
  6. Step 6: Final answer
    x = 63,678.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.